Abstract: The present disclosure provides an inflatable building structure, comprising at least one enclosure of fluid impermeable fabric deployed above a surface that is separate from the fluid impermeable fabric to form an enclosed space bounded by the fluid impermeable fabric and the surface. The inflatable building structure comprises a cleaning assembly for draining one or more contaminants from the enclosed space bounded by the fluid impermeable fabric. The cleaning assembly comprises at least one first opening formed on an exterior of the at least one enclosure, and comprising a first attachment mechanism positioned on any of an interior and an exterior of the at least one enclosure configured to detachably secure a container for receiving the one or more contaminants from the enclosed space of the at least one enclosure.